Center channel (CSiA6) in Polk surround setup sounds off - AVS Forum
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post #1 of 14 Old 09-03-2013, 02:16 PM - Thread Starter
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Hey everyone,

I have this setup:

Receiver: Denon AVR3312CI
Front Left & Right: Polk RTI A9
Center: Polk CSiA6
Surround Left & Right: Polk FXiA6
Surround Back Left & Right: Polk FXiA6
Sub: Epik Empire
Amp: Emotiva XPR-5 (for Fronts, Center, Surrounds)

I've had this setup for about a year. Everything sounds great except the center channel. I wish I could accurately describe it but it just sounds like it's missing something, almost like it's out of place with the rest of the setup and missing a certain punch. During pure dialogue scenes it quite frankly hurts my ears if it's too loud and sounds isolated. I setup the speakers running Audyssey on the Denon. Since then I've played with adjusting the channel level of the center and nothing seems to make a difference.

Does anyone have any suggestions?

These are my settings:

Front L & R -3.0db, Center -4.0db, Subwoofer -11.0db,
Crossover Frequency: 80Hz for all
Subwoofer Mode LFE+Main
LPF for LFE 120Hz

Much appreciate any help!

Thanks,
Mike
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post #2 of 14 Old 09-03-2013, 02:30 PM
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My first thought is with a setting of -11 on your sub is that you had it turned
Up too high (gain knob on back of the sub) when you ran Audyssey.

2nd is that with your sub (which is very good) is that you should not
Be using the LFE + Main setting....only LFE.

Re-do Audyssey but turn your sub down about 25% on the back 1st.
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post #3 of 14 Old 09-03-2013, 03:12 PM
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Also review the Audyssey FAQ in the sticky below. Sometimes mistakes
Running Audyssey can have a bad effect on what you are hearing.



http://www.avsforum.com/t/795421/official-audyssey-thread-faq-in-post-1
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post #4 of 14 Old 09-03-2013, 03:23 PM
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Does your receiver have a dialog setting? If so, what is it set at?
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post #5 of 14 Old 09-03-2013, 09:16 PM - Thread Starter
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Quote:
Originally Posted by grasshoppers View Post

My first thought is with a setting of -11 on your sub is that you had it turned
Up too high (gain knob on back of the sub) when you ran Audyssey.

2nd is that with your sub (which is very good) is that you should not
Be using the LFE + Main setting....only LFE.

Re-do Audyssey but turn your sub down about 25% on the back 1st.

Thanks for the tips...

I re-ran Audyssey with the Sub turned down 25% and also following the Audyssey FAQ. This time it set the Sub to -12 but also set the frequency of the Center & Rear Surrounds to 40Hz and the Front L/R & Side Surrounds to "Full Band." I changed to just LFE as well.

I think it sounds a little better on some things...particular music. Dialogue I'm still not sure about. It seems like my ears are just expecting more bass and because of that it's unpleasant to listen to.
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post #6 of 14 Old 09-03-2013, 09:44 PM
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The extremes for the channel levels are -12 and +12. If you're getting a -12 channel level your sub volume is still too high. Turn it down some more and recalibrate.

Afro GT
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post #7 of 14 Old 09-04-2013, 12:01 AM
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Mike I gotta tell ya back when I had a Polk setup with RTia6s I had the same issue with the CSiA6. I could never get it to sound correct. It too was piercing to my ears. I hope you get it worked out but after months of constantly adjusting the EQ i gave up. I sold all my Polk stuff since and got 5 CHT SHO-10s. Dialog sounds like a movie theater now. As in even the quietest noise is audible but voices sound forward, big, and very distinct. Dynamics are scary good now and its loud but comfortable with my whole screen sounding like a giant speaker. I am by no means telling you to sell your stuff tho. Just I had to try something else. I have heard others that like the CSia6 center tho.

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post #8 of 14 Old 09-04-2013, 11:12 AM - Thread Starter
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Quote:
Originally Posted by afrogt View Post

The extremes for the channel levels are -12 and +12. If you're getting a -12 channel level your sub volume is still too high. Turn it down some more and recalibrate.

Ok so I lowered the Sub again and re-ran Audyssey. This time it put the Sub at +9.0db. Kind of a drastic change. The sub is way too high now so I lowered it to +5.0db. It also put the Crossover Frequency to 40Hz for all speakers except the fronts which it has at Full Band. Still just seems off. Reddig may be right that it's just these Polk speakers.
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post #9 of 14 Old 09-04-2013, 12:56 PM
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Wow, it went from -12 to +9? how much did you turn down the dial? Try to get Audyssey to automatically set it between -3 and +3 if you can.

Its very possible the Polk speakers are not your cup of tea. Some people feel they can be a little bright sounding.

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post #10 of 14 Old 09-04-2013, 01:21 PM
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Count me as one of those who felt my RTI A7's & CSI A6 were too bright. So I ordered a couple of different tweeters for the A7's. Much better for listening to some of my music that was irritating. I have ordered 3 more for the center & wides. If you are only unhappy with the center, you might try a different tweeter. If you don't like it, many places will let you return it.
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post #11 of 14 Old 09-04-2013, 07:32 PM - Thread Starter
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Quote:
Originally Posted by afrogt View Post

Wow, it went from -12 to +9? how much did you turn down the dial? Try to get Audyssey to automatically set it between -3 and +3 if you can.

Its very possible the Polk speakers are not your cup of tea. Some people feel they can be a little bright sounding.

When I first ran it, I had the dial at about 25% and it gave me -12.0. I turned it down to about 15% and then it gave me +9.0. Very weird. I turned it up slightly and ran Audyssey again and got -3.0.

Is it a bad idea to keep the rest of the Polks and just swap the center for something else? It's definitely just too piercing (is that considered bright?) to my ears.
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post #12 of 14 Old 09-04-2013, 07:35 PM - Thread Starter
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Quote:
Originally Posted by Marantz guy View Post

Count me as one of those who felt my RTI A7's & CSI A6 were too bright. So I ordered a couple of different tweeters for the A7's. Much better for listening to some of my music that was irritating. I have ordered 3 more for the center & wides. If you are only unhappy with the center, you might try a different tweeter. If you don't like it, many places will let you return it.

What tweeter did you get for the A6?
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post #13 of 14 Old 09-04-2013, 08:43 PM
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http://www.parts-express.com/term/mdt22?srch=mdt22

Fits the hole & I drilled 4 small holes to screw it in.

Here is one installed in one of the A7's

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post #14 of 14 Old 09-05-2013, 12:31 AM
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Quote:
Originally Posted by Mike Rogalewski View Post

When I first ran it, I had the dial at about 25% and it gave me -12.0. I turned it down to about 15% and then it gave me +9.0. Very weird. I turned it up slightly and ran Audyssey again and got -3.0.

Is it a bad idea to keep the rest of the Polks and just swap the center for something else? It's definitely just too piercing (is that considered bright?) to my ears.

An issue could be that a different brand of center won't/may not be timbered matched to your mains and surrounds. If you do make sure the center has a dome tweeter like your Polks and similar sensitivity mids as well as the tweeter. In others words dont try to get a center with a horn or CD like a Klipsch RC-62II for example. I have heard setups with different brands of center and mains that sounded great tho so it is possible. Maranta guy has a good idea too as that way your mids would still be timber matched instead of whole new center.

JBL Pro Cinema
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